Answer:
6 2/3.. i think
Step-by-step explanation:
hopefully u understand my messy handwriting
How do you find the correct equation? Follow these steps.
First, plug 0 in for X and solve for Y . Does the y value match what is on the graph? 0 in this case?
a. 0 = -2(0) True - This could be an answer
b. 0 = 0 + 4 False - This cannot be an answer
c. 0 = 2(0) True - This could be an answer
d. 0 = 0 - 4 False - This cannot be an answer
Now we are down to 2 possible answers A and C. Now take another point on the line, say x=-2 and repeat, does the answer match what is on the graph? (4).
a. 4 = -2(-2) True
c. 4 = 2(-2) False
As only A matches, A must be the answer. With graphing problems, when you have to find the correct equation, always choose X=0 as the first point (assuming it has a Y value) and eliminate answers. I hope this helps.
Answer:
it took him 3 hours to get to work
Step-by-step explanation:
For the first part of the trip, the executive covered a distance "d" in time 't" at 35 mph, therefore we can write that the time it took to get to the helicopter was:
which if the distance is in miles, will render the time in hours.
We can write something similar for the second part of the trip", using the same "t" since it took the same time as for the first one, and using for distance 169.5 - d (since it is the distance to complete the total traveled distance :
Now we equal those two equations because the time "t" is the same, and solve for "d":
Now, knowing the distance covered in the first trip, we can find the time of that first trip:
Therefore, the time it took for thye total trip is: 1.5 h + 1.5 h = 3 hours
Answer:
Step-by-step explanation:
HTH TTH TH H T U
<u> 10 0 0 0 0 0</u>
<u>1,000,000</u>
<u />
Answer:
The answer to each question is given below.
Step-by-step explanation:
As the problem states, a researcher is ttrying to find whether higher levels of a drug given to experimental rats would decrease the time it take them complete a maze to find food.
a. As you can see the researcher is aplying different treatments (doses or levels of the drug) to the rats and thats why this is an experimental study not an observational one (in which there are no treatments imposed by the researcher).
b. If the population of rats that are under study consist of 30 individuals and there are three treatments (three levels of the drug: 0 mg, 1 mg and 2 mg), the researcher should assign 10 rats to each treatment. Here the dose of 0 mg acts as a control.
So, each rat will receive its respective dose of drug and then has to do the maze. The researcher will register the time the rat needs to find food. To avoid incidence of the researcher in the assay there will be something that acts as barrier between the rat and the researcher, this way the rat will not see the researcher and will be only focused on finding the food.
With obtained data, the researcher will evaluate the incidence of the drug on the time the rat completes the maze.
